:root {
    --accent-dark: #001a33;
    --accent-light: #d9e6f2;
    --dark: #003300;
    --med: #559155;
    --light: #eff6ef;
    --shadow: #006600;
    font: 20px Helvetica, Arial, sans-serif;
  }

  body {
    background: var(--light);
    padding: .5em 2em;
  }

  p {
    line-height: 1.5;
    margin: .5em 0px;
  }

  /* header/footer stuff */

  header, footer, main {
    background-color: var(--light);
    border: .05em solid var(--dark);
    box-shadow: 0px 0px .2em .2em var(--shadow);
    margin: 1em .05em;
    width: 95%;
  }

  header,
  footer {
    background-color: var(--dark);
    border: .05em solid var(--light);
    color: white;
  }

  footer > address {
    font-style: normal;
    padding: .25em;
  }
  footer > address:last-child {
    font-style: italic;
    text-align: center;
  }
  footer > address > a:link {
    color: var(--light);
  }
  nav {
    background-color: var(--light);
    margin: .25em;
    padding: .2em;
  }

  nav > a {
    display: block;
    padding: .5em;
    margin: .2em;
  }
  
  nav > a:hover {
    color: var(--light);
    background-color: var(--med);
  }
  h1, h2 {
    margin: .2em .5em;
  }

  h1 {
    font-size: 1.75em;        
  }

  h2 {
    font-size: 1.5em;
  }


  /* article stuff */

  article:nth-child(odd) {
    background-color: white;
  }
  article {
    padding: .4em;
  }

  article > h2 {
    color: var(--dark);
    border-bottom: .1em solid var(--dark);
  }
  article > p, article > h2, article > h3 {
    margin: .1em .1em .2em;
  }
  article > nav {
    border: .05em dashed var(--shadow);
  }
  article > nav > a {
    padding: .2em;
  }
  article > nav > a:hover {
    background-color: initial;
    color: initial;    
  }

  aside {
    background-color: var(--accent-light);
    border: .1em solid var(--accent-dark);
    border-radius: 5px;
    margin: .1em 1.5em;
    padding: .5em;        
  }

  /* figures and images */
  figure {
    padding: .5em;
  }
  figcaption {
    color: var(--dark);
    font-weight: bold;
  }
  figure > img {
    width: 50%;
    min-width: 100px;
  }

  div > img {
    width: 95%;
  }

  @media only screen and (min-width: 520px) {
    footer {
        display: grid;
        grid-template-columns: 1fr 1fr;
        justify-content: start;
    }
    footer > nav,
    footer > address:last-child {
        grid-column: 1 / span 2;
    }
  }

  @media only screen and (min-width: 768px) {

    footer > nav {
        text-align: center;
    }
    footer > nav > a,
    header > nav > a {
        display: inline-block;
    }
  }